from tkinter import*
coords = [0,0,10,0,10,10,20,10,20,30,10,30,10,20,0,20,0,0]
root = Tk()
root.title('ИТ марафон')
root.geometry('500x500')
canvas = Canvas(bg='white', width=500, height=500)
canvas.pack(anchor=CENTER, expand=1)
canvas.create_polygon(coords)
root.mainloop()
